Php, codeigniter, mysql - php

Question

How to retrieve student scores on each subject from database table infront of their names..
My Model
public function getscore($class, $term, $session)
{
$query = $this->db->query("SELECT scores FROM allscores WHERE class ='$class' AND term ='$term' AND session ='$session' AND scores !=0");
return $query;
}
controller
public function showscores()
{
$class=$this->input->post('classes');
$term=$this->input->post('term');
$session=$this->input->post('session');
$data['query_scores'] = $this->model->getscore($class,$term, $session);
$this->load->view('scoresheet', $data);
}
view page
<table>
<tr>
<?php
foreach ($query_scores->result() as $row)
{
?>
<td><?php echo $row->scores; ?></td>
<?php
}
?>
</tr>
</table>
Note: student name is listed horizontally on the left side of d page, subject names is displayed vertically as the heading.
My challenge is to display the score o each subject under d subject name for each students.
Your assistance in this regard would be very appreciated.

Answer 1

public function getscore($class, $term, $session)
{
$query = $this->db->query("SELECT scores FROM allscores WHERE class ='$class' AND term ='$term' AND session ='$session' AND scores !=0");
return $query-result();
}
Use result() to format and show thing from database.

Answer 2

Use following table format to display subject names
<table>
<thead>
<tr>
<td> SUB1 </td> <td> SUB2 </td> <td> SUB3 </td>
</tr>
</thead>
Now use your code for Corresponding Content.
The exact PHP code for displaying the subject score will depend on your database structure. For more clarification, please share your database table structure.

Answer 3

try this.
Model:
note: change field name and query structure to match yours
normaly this will require a join but this is a basic example for you to get the idea
public function getscore($class, $term, $session){
$query = $this->db->query("SELECT scores,student_id ,student_name, subject_id,subject_name , FROM allscores WHERE class ='$class' AND term ='$term' AND session ='$session' AND scores !=0");
return $query;
}
Controller:
public function showscores(){
$class=$this->input->post('classes');
$term=$this->input->post('term');
$session=$this->input->post('session');
$data['query_scores'] = $this->model->getscore($class,$term, $session);
// create array to hold the new organized data;
$list = array();
// list['scores'] will hold the student scores;
// list['students'] = will hold the student names
// list['subjects'] = will hold the subjects names
// loop throught the result
foreach ($query_scores->result() as $row){
$list['scores'][$row->student_id][$row->subject_id] = $row->scores;
$list['students'][$row->student_id]= $row->student_name;
$list['subjects'][$row->subject_id]= $row->subject_name;
}
$this->load->view('scoresheet', $list);
}
view page:
<table>
<tr>
<?php
foreach ($subjects as $subject){
echo "<td>".$subject."</td>"; // will display subjects names on the first row
}
?> </tr> <?php
$column = 0;
foreach ($scores as $key=>$element){
echo "<tr>";
echo "<td>".$students[$key]."</td>"; // will display student names on the first col
foreach ($element as $subKey=>$subelement){
echo "<td>".$subelement."</td>";
}
echo "<tr>";
<?php
} ?>
</table>